Product Details

Modicon AS-H810-1208 is a high-speed digital I/O module and reliable pulse signal acquisition card belonging to the Modicon H800 legacy PLC series, manufactured by AEG Modicon. This h800 high-speed i/o card integrates 12 high-speed isolated digital inputs and 8 high-speed digital outputs within a single-slot form factor, built for fast pulse capture and immediate output response for motion control, packaging machinery and high-speed sequencing applications. It supports encoder pulse sampling, high-frequency trigger signals and pulse command output for servo and stepper axes, with configurable sink/source type for each channel and ultra-short signal latency. Each channel provides electrical isolation to protect the backplane from field transients, while front LED indicators display individual channel status and fault alarms for quick maintenance checks. It adopts high-speed backplane bus communication to exchange real-time I/O data with the host Modicon CPU. As a discontinued legacy spare, this high speed digital i/o module works as a drop-in replacement to restore fast pulse and discrete signal handling for ageing Modicon H800 automation racks.

Basic Parameters

Brand: Modicon (AEG legacy)

Model: AS-H810-1208

Product Type: H800 Series High Speed Mixed Digital I/O Module

Compatible Rack: Modicon H800 backplane and 984 family PLC controllers

Digital Input: 12 isolated high-speed channels, 24 VDC

Digital Output: 8 high-speed channels, 24 VDC

I/O Type: Configurable sink / source

Input Response: Sub-millisecond high-speed capture for pulse and encoder signals

Isolation: Channel-to-channel and field-to-backplane isolation

Termination: Removable screw terminal block

Indicator: Front LED for power, channel status and fault

Form Factor: Single slot rack mount

Product Status: Discontinued, end of production

Net Weight: Approximately 0.61 kg

Supported Functions

This high speed digital i/o module captures high-frequency pulse, encoder and trigger signals from field sensors and transmits sampled values to the main controller. The pulse signal acquisition card executes fast output refresh according to motion and sequence instructions from the CPU. This h800 high-speed i/o card supports pulse counting, homing trigger, high-speed interlock and direct pulse output for positioning axes. It runs built-in self-diagnosis to detect short circuits, overvoltage and backplane communication failure, and locks outputs into safe states once critical faults occur. It can cooperate with other analog, communication and counter modules to build a complete high-performance legacy control system.

Core Functions

As a dedicated pulse signal acquisition card, this high speed digital i/o module serves as the high-speed signal interface between fast moving machinery and the Modicon PLC. It captures time-critical events that standard discrete I/O cannot resolve and outputs rapid control pulses without waiting for the main program scan. This h800 high-speed i/o card acts as a direct spare to rebuild high-speed discrete and pulse signal control for ageing Modicon automation racks.

Hardware Specifications & Environmental Features

Operating Temperature: -10°C ~ +60°C

Storage Temperature: -20°C ~ +70°C

Relative Humidity: 5%–95%, non-condensing

Housing: Industrial single-slot plastic module with shielding

Protection: Overvoltage, overcurrent and short-circuit protection per channel

Anti-interference: Galvanic isolation and filtered pulse lines to suppress EMI

Compatibility: Modicon H800 backplane, Modicon 984 CPUs, H800 series I/O modules

Industry Applications: Applied in legacy petrochemical distributed control, old paper making production automation, material handling conveyor lines, packaging and textile machinery, water treatment remote signal collection and large conveyor remote I/O control racks.

Note：Confirm H800 backplane compatibility, sink/source setting, pulse wiring and channel isolation before ordering.

This is from our current stock.

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